Stage 5Post Carbon Filter: A polishing process that removes tastes and odors out of the water.Technical Information:Max. Total Desolved Solids (TDS): no more than 200ppmWater Temp. Range: 40-85oFWater Pressure Range: 40-125psiAllowable pH Range: 4-11Max. Manganese: no more than 0.05ppmMax. Iron: no more than 0.1ppmHydrogen Sulfide: must not be presentBacteria: water source must be potableItem# I-PL50T36